	
	package servlet;
	
	import java.io.IOException;
	import javax.servlet.ServletException;
	import javax.servlet.http.HttpServlet;
	import javax.servlet.http.HttpServletRequest;
	import javax.servlet.http.HttpServletResponse;
	import javax.servlet.http.HttpSession;
	
	public class Logout extends HttpServlet {
	
		/**
		 * 
		 */
		private static final long serialVersionUID = 1L;

		/**
		 * Constructor of the object.
		 */
		public Logout() {
			super();
		}
	
		
		public void doGet(HttpServletRequest request, HttpServletResponse response)
				throws ServletException, IOException {
			HttpSession session =request.getSession();
			//将该session进行注销
			session.removeAttribute("username");
			session.invalidate();
			request.getRequestDispatcher("/index.jsp").forward(request, response);
		}
	
		/**
		 * The doPost method of the servlet. <br>
		 *
		 * This method is called when a form has its tag value method equals to post.
		 * 
		 * @param request the request send by the client to the server
		 * @param response the response send by the server to the client
		 * @throws ServletException if an error occurred
		 * @throws IOException if an error occurred
		 */
		public void doPost(HttpServletRequest request, HttpServletResponse response)
				throws ServletException, IOException {
					doGet(request,response);
			
		}
	
	}
